獲取多進程函數返回值

from multiprocessing import Process
from multiprocessing import Manager
def a(x):
    b=1+2
    x[b]=b
if __name__=='__main__':
    manager = Manager()
    x = manager.dict()
    p1 = Process(target=a,args=(x,))
    p1.start()
    p1.join()
    print(x.values())